Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 720 [Rate centres in NPA 720] [Dial plan for NPA 720]

NXX: 388

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
720-388 A Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656      
720-388 0 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2010-03-13   
720-388 1 Denver CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2010-05-30   
720-388 2 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2010-05-20   
720-388 3 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2010-05-20   
720-388 4 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2010-05-20   
720-388 5 Denver CO DNVRCOII3MD  6529 T-MOBILE USA, INC. 656   2010-05-20   
720-388 6 Denver CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2010-07-03   
720-388 7 Denver CO DNVTCOZIDS1  026D ONVOY, LLC - CO 656   2010-06-05   
720-388 8 Denver CO DNVRCOMAXGZ  078F BANDWIDTH.COM CLEC, LLC - CO 656   2010-07-03   
720-388 9 Denver CO AURRCO20AMD  6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2010-07-02   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.